Minor update release (v0.3.0)

Over the last year, I've spent some time improving bits of the engine used in Solitary, and after I noticed that the game did not start properly because of a DLL error on a fairly new computer, and figured it would be time to make a package out of this fix and all the other stuff. Here it is.

RELEASE NOTES - v0.3.0

• Fixed an issue keeping the game from starting properly on some systems, likely after they had been updated at some point.
• Clouds rendering now relies on a bilateral filter to smooth out the ray-marching dithering.
• UI menus now feature notes to explain the purpose of options.
• Added progress bars to loading screens
• Audio rendering is now done using OpenAL instead of PortAudio, to handle sound spatialization (although it does not show, as there are no other aircrafts in the game right now)
• Game state & menu consistency fixes
• Input management fixes
• The game executable is now built in 64 bits